Tuesday, October 25, 2011

Blanchet Theorem

In triangle ABC, Point E is an arbitrary point on altitude AD. Move point A, B, C or E and observe what happens.
This is a Java Applet created using GeoGebra from www.geogebra.org - it looks like you don't have Java installed, please go to www.java.com
Make a conjecture about your observation. Prove your conjecture.

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